CS220-8M Equivalent & Substitute Parts

Part Overview

The CS220-8M is a 600V 8A SCR (Silicon Controlled Rectifier) in TO-220-3 through-hole packaging manufactured by Central Semiconductor Corp. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing system support and new design implementations. The part operates across a temperature range of -40°C to 125°C and features standard recovery characteristics suitable for general thyristor switching applications.

Key Parameters

Parameter	Value
Voltage - Off State	600 V
Current - On State (It (RMS)) (Max)	8 A
Voltage - Gate Trigger (Vgt) (Max)	1.5 V
Current - Gate Trigger (Igt) (Max)	15 mA
Voltage - On State (Vtm) (Max)	1.8 V
Current - Hold (Ih) (Max)	20 mA
SCR Type	Standard Recovery
Operating Temperature	-40°C ~ 125°C
Mounting Type	Through Hole
Package / Case	TO-220-3

Substitute Part Grouping Explanation

Substitution of the CS220-8M is determined by the following critical parameters:

Voltage Rating (Off State): 600 V minimum requirement
Current Rating (RMS): 8 A minimum requirement
Gate Trigger Specifications: Vgt ≤ 1.5 V and Igt ≤ 15 mA
On-State Voltage: Vtm ≤ 1.8 V
Hold Current: Ih ≤ 20 mA
SCR Type: Standard Recovery
Package: TO-220-3 through-hole configuration
Temperature Range: -40°C to 125°C

The S6008RTP from Littelfuse Inc. meets all specified electrical and mechanical parameters for direct substitution.

Parameter Comparison

Parameter	CS220-8M (Central Semiconductor)	S6008RTP (Littelfuse)	Compatibility
Voltage - Off State	600 V	600 V	Match
Voltage - Gate Trigger (Vgt) (Max)	1.5 V	1.5 V	Match
Current - Gate Trigger (Igt) (Max)	15 mA	15 mA	Match
Voltage - On State (Vtm) (Max)	1.8 V	1.6 V	Compatible (S6008RTP superior)
Current - On State (It (RMS)) (Max)	8 A	8 A	Match
Current - Hold (Ih) (Max)	20 mA	30 mA	Compatible (within tolerance)
SCR Type	Standard Recovery	Standard Recovery	Match
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	Match
Mounting Type	Through Hole	Through Hole	Match
Package / Case	TO-220-3	TO-220-3	Match

Engineering Selection Recommendations

The S6008RTP is the manufacturer-recommended substitute for the CS220-8M. This part is classified as active product status, ensuring continued availability and manufacturing support. The S6008RTP maintains electrical equivalence across all critical parameters while offering improved on-state voltage performance (1.6 V versus 1.8 V maximum). The component is RoHS3 compliant, providing environmental and regulatory advantages over the obsolete CS220-8M. Both parts share identical packaging, mounting configuration, and temperature operating range, enabling direct board-level replacement without circuit redesign.

Frequently Asked Questions (FAQ)

Q: Can the S6008RTP replace the CS220-8M in existing designs? A: Yes. The S6008RTP meets or exceeds all electrical specifications of the CS220-8M, including voltage ratings, current ratings, gate trigger parameters, and operating temperature range. The TO-220-3 package configuration is identical, permitting direct substitution.

Q: What are the key differences between these parts? A: The S6008RTP provides lower on-state voltage (1.6 V maximum versus 1.8 V) and higher hold current specification (30 mA versus 20 mA). Both differences favor improved performance characteristics. The S6008RTP is RoHS3 compliant, whereas the CS220-8M status is not specified.

Q: Why is the CS220-8M obsolete? A: The CS220-8M is classified as obsolete by the manufacturer. The S6008RTP represents the active equivalent part for new designs and ongoing system support.

Q: Are there packaging differences? A: Both parts use TO-220-3 through-hole packaging. The S6008RTP supplier device package is designated TO-220AB-R, which is mechanically and electrically compatible with the standard TO-220-3 configuration.

Q: What compliance certifications apply? A: Both parts carry REACH Unaffected status and EAR99 ECCN classification. The S6008RTP additionally holds RoHS3 compliance certification.

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